Siemens SIPART PS2 Series Operating Instructions Manual page 329

this is installed in the field device or HART communicator. In the case of an operator station, the
connection is made externally via the serial interface. A point-to-point connection is used
between the field and HMI device. In this case, a HART HMI device is connected to exactly one
HART field device. However, further devices can be integrated using a multiplexer.
HART communicator
For parameter assignment with the HART Communicator, the connection is made directly to
the 2-wire cable. For parameter assignment with a laptop or a PC, a HART modem is connected
in between.
Increment
From the Latin word incrementare, increase. Increment is the defined amount of change when
increasing a variable gradually. IT term that refers to a step-by-step increase in a numeric
value.→Decrement.
Initialization
Setting the most important basic parameters. Requirement for commissioning the positioner.
IP code
The abbreviation IP stands for International Protection as per DIN. In English-speaking
countries, IP stands for Ingress Protection.
Microcontroller
Microcontrollers (also µController, µC, MCU) are single-chip computer systems in which almost
all components such as master processor, program memory, working memory and input/output
interfaces are included in a single chip.
NAMUR
Standardization association for measurement and control in chemical industries. NAMUR is an
association of users of process control technology. The members are mainly companies from
German-speaking countries. The association was formed in Leverkusen in 1949.
NEMA
National Electrical Manufacturers Association. NEMA is a standardization institute in the USA.
NEMA was formed in 1926 with the merge of Associated Manufacturers of Electrical Supplies
and the Electric Power Club.
SIPART PS2 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E00074631-AE
Glossary
329